Lamp



FIG. 1 is a top, front, left side perspective view of a lamp showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a fragmentary front elevational view thereof, the lamp being fragmentarily shown for convenience of illustration;

FIG. 4 is a fragmentary right side elevational view thereof, the lamp being fragmentarily shown for convenience of illustration;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The oblique line shading indicates mirrored surfaces. 

The ornamental design for a lamp, as shown and described. 